Just wanted to reply since I had the same Dx at the same age. I have a neo baddler and only experience infections once in a while. I'd suggest having Cipro around so if he experience chills and back pain - an indicator of infection, he can start immeidately.
Make sure to find someone local with knowledge of neo bladders. Most Urologist do not perform them and are limited in their knowledge.
Annual lower CT pelvic exam and bone scans are a must.
I can void myself but after about I year I have turned to using a catheter. Make sure to have him void often to avoid the neo bladder from expanding too large.
Take care . . by the way - I started chemo and did research half way through and decided to stop. There isn't any definitive studies that prove chemo after the radical surgery does any good.